The kids who are trapped in HorrorLand thought they had reason enough to panic. That was before they reached Panic Park.Because Panic Park is home to The Menace, a two-faced villain with a twisted plan to trap them forever.

Someone — or something — is inviting ordinary kids to HorrorLand and trapping them there. But they're not the only guests of the terrifying theme park where nightmares come to life. Slappy the Dummy, Monster Blood, and other vile villains have joined the terror trip, too.

Before joining the other kids trapped in HorrorLand, Michael Munroe will learn a few new lessons in fear: Never trust a teacher who calls everybody "Little Monsters." Be careful if that teacher invites you to lunch at her house.

Robby creates his own comic strips so he can freak out his friends and family. His favorite character is Dr. Maniac, a villain with a wicked grin and even wickeder superpowers. And now Dr. Maniac is on the loose...in the real world!

Billy and his sister, Sheena, unwittingly dive into a terrifying mystery when they accept a surprise invitation to HorrorLand, the amusement park that always lives up to its name. But first Billy and Sheena must sink or swim aboard a doomed ship that happens to be underwater, with a captain who happens to be dead.

For an athlete like Matt Daniels, breakfast is the most important meal of the day. It's also the most dangerous. That's because somebody is about to pull a mean prank. The recipe is simple: Just add gooey, green Monster Blood.